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 How to fit multiple peaks of different type		  New Topic  Reply to Topic
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srm206

USA
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Posted - 04/24/2008 :  4:33:56 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
How do I fit multiple peaks of different type (say one Gaussian and other Lorentzian) to a single data set?
Can I do it using Origin Programming?

help is appreciated..

Thanks in Advance

Srinivas Mettu

larry_lan

China
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Posted - 04/25/2008 :  04:05:52 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Srinivas:

You can only fit one function for every fitting session. However, you can use the Data Selector tool to select different part of the curve to fit different functions.

Thanks
Larry
OriginLab Technical Services
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easwar

USA
1965 Posts
Posted - 04/26/2008 :  5:03:55 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Srinivas,

What version do you have?

With version 7.x Pro, you can use PFM to perform such mixed-function fitting on single dataset

With 8.0 you need SR1 that has Peak Fit Wizard and that allows fitting with mixed functions as well. This functionality is being improved in upcoming SR2.

If you have standard version, then you can fit individual ranges as Larry suggested.

Easwar
OriginLab
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